Photo of Electro-Harmonix Holy Grail and more gear in a pedalboard

Electro-Harmonix Holy Grail

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$18.48 to $99.00 Price Tier: Standard

4.5 (88)

1 Critic Review

10 Reviews

This product is Vintage or Discontinued

Newer option

Electro-Harmonix Holy Grail Nano

$111.00 - $137.90

4.5 (237)

Find out who is using Electro-Harmonix Holy Grail

9 community setups

111 wishlisted

314 saved

Page last updated Jul 06, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated July 5, 2026.

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Reviews

Price

5.0 (1)

$18.48

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4.0 (36)

$99.00 24 available Used

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Average Price: $135

Standard/Professional

$100

$276+

Price Tier

In the Reverb Effects Pedals category, Electro-Harmonix Holy Grail is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 1 merchant for "Electro-Harmonix Holy Grail". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unveiling the Electro-Harmonix Holy Grail, a true classic in the realm of reverb effect pedals. This coveted piece of gear, renowned for its customizable reverb settings, offers a universal solution for guitarists in need of that perfect echo. With its singular knob control and a choice of "spring," "hall," and "flerb" modes, it allows for a seamless blend between simplicity and versatility. Experience the timeless tone of this pedal that's been a favorite among musicians, maintaining its popularity over the years despite its larger enclosure.

Key Features:

Single knob control for easy adjustment of reverb intensity
Three selectable reverb modes: "spring," "hall," and "flerb"
Larger enclosure, maintaining the classic design of earlier versions

Product specs

Type	Electro-Harmonix Power Supply
Input Voltage Range	120V AC, 60Hz
Output Voltage	9V DC
Output Amps	500mA
Polarity	Sleeve: Negative, Tip/Center: Positive
Compatibility	Electro-Harmonix Holy Grail (older styles)
Connectivity	1/8" TS plug

FAQs

What types of reverb does the Electro-Harmonix Holy Grail offer?: The Electro-Harmonix Holy Grail Reverb Pedal offers three reverb types: SPRING, HALL, and FLERB, each designed to provide unique ambient effects suitable for various musical styles.
Is the Electro-Harmonix Holy Grail pedal digital or analog?: The Holy Grail is a digital reverb pedal, featuring digital algorithms tailored for electric guitars but also suitable for other instruments and vocals.
Can the Electro-Harmonix Holy Grail be used with instruments other than electric guitars?: Yes, while the Holy Grail is designed for electric guitars, it works equally well with most instruments and voices, offering versatile reverb options.
Does the Electro-Harmonix Holy Grail Reverb Pedal require a specific power supply?: The Holy Grail requires a 9V DC power supply with a negative sleeve and positive tip polarity, typically provided with the pedal for optimal performance.
How does the FLERB setting on the Electro-Harmonix Holy Grail differ from traditional reverb?: The FLERB setting combines reverb with a flanger effect, creating a unique, modulated reverb sound that adds a swirling dimension to your tone.

Videos

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ProGuitarShopDemos

Electro Harmonix Holy Grail Reverb

ProGuitarShopDemos

Electro-Harmonix Holy Grail Reverb Pedal (Demo by Peter Stroud)

EHX

Electro-Harmonix Holy Grail Reverb Pedal (EHX Demo by TOM BURDA)

EHX

Electro-Harmonix Holy Grail Reverb | Reverb Demo Video

Reverb

GAS N' GO - EHX Holy Grail Reverb

60 Cycle Hum

The Gear Booth | EP2 | Electro-Harmonix Holy Grail Reverb

Gear Booth

Electro-Harmonix Holy Grail

StompCentraldotcom

Vintage Reverb Pedal for Only $50?... (2000s EHX Holy Grail)

feezo

Simply Stellar! EHX Electro-Harmonix Holy Grail Reverb Guitar Pedal Review -- Reid's Reivews

Reid's Reviews

ELECTRO HARMONIX Holy Grail Reverb

Kev_k_ life

EHX Holy Grail - Straight In Demo

Straight In Demos

EHX Holy Grail on GUITAR and BASS

About Knob

RT EHX Holy Grail demo

Ross Totino and Fans of Collision

Reviews

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PROS

Spring setting mimics real reverb tanks well
Hall setting excels, enabling super wet sounds
Flerb setting useful for ambient music
Simple design, easy to use
Durable, with over 15 years of reliable use reported
Warm sound quality, especially good in its price range
Versatile, works well with different music styles and equipment
Does not color the original sound but enhances it

CONS

Proprietary power supply, inconvenient for some users
Sweet spot limited, too subtle below or overshadows dry signal above certain settings
Limited control options, lacks pre-delay adjustment
Sound quality not unanimously considered the best available

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Holy Grail.

Features and functionality

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The older big box version is noted for being picky about power supplies and can be noisy if not properly powered.
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The Holy Grail Plus offers control over blend and decay time, providing a more realistic reverb than the one-knob nano version.
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The Holy Grail's Hall reverb is described as dark and moody, ideal for ambient music, yet it doesn’t muddy fast passages.
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The Flerb setting becomes most usable at or below 9 o'clock on the dial, providing subtle movement similar to a tape delay flutter control.
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The Neo version offers a plate reverb instead of the Nano's flerb, despite both sharing similar spring and hall settings.
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Owners find the lack of time control on the reverb settings a limitation, often leading them to upgrade to the Holy Grail Plus for more versatility.
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Comparisons

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The Holy Grail is compared to the Keeley Omni Reverb, which offers a more useful plate reverb instead of the unique "flerb" mode.
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The Holy Grail was replaced by a Strymon Flint after 20 years on one owner's board, indicating a preference for more modern features.
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The Spring reverb on the Holy Grail offers a distinct, recognizable sound that differs from traditional spring reverbs like those in Fender Princetons.
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Users compare the Holy Grail to the Line 6 Verbzilla, noting the latter's superior sound and broader options.
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User experience

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Some users find the pedal prone to feedback and describe it as having a "peaky" sound.
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Users appreciate the Holy Grail for its simplicity, referring to it as a reliable, "set and forget" tool for musicians who prefer focusing on playing rather than constant tweaking.
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Use cases and applications

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Owners prefer the Holy Grail for fast-paced music due to its ability to stay in the background without overwhelming the dry signal.
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The flerb setting, despite its reputation, is appreciated for clean single-note melodies but deemed unsuitable for rhythm chord work.
Source

Critic Reviews

Electro-Harmonix Holy Grail

soundonsound.com

The Electro-Harmonix Holy Grail is a straightforward digital reverb pedal offering three reverb types: Spring, Hall, and the unique Flerb. Its simplicity and usability make it appealing, particularly for clean guitar players. However, its mono output and slight background hiss may deter studio enthusiasts, while the fixed modulation of Flerb could be divisive. Though marketed as a 'Holy Grail,' it may be more aptly described as a solid and uncomplicated reverb option.

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Full Review

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4.5 out of 5

Based on 10 Reviews and 88 Ratings

5 star

4 star

3 star

2 star

1 star

nclsrfn

222

about 4 years ago

holy moly

It's a bit overrated, I think, I don't know if it deserves the cult status it has. The sweet spot is reverb at 12 o'clock, spring setting. Below that it's too subtle, above the dry signal comes down. Sounds great, I use it a lot in the studio, but at the end of the day it's a lil' digital reverb in a kickass vintage housing.

Roles:

Guitarist Bassist Drummer

Genres:

Electronic Rock Pop

nils813

552

over 10 years ago

Wonderful reverb, great for filling out sound

The Holy Grail features three types of reverb: hall, spring, and flerb, which is a flange+reverb setting. Each setting sounds great and fills out the tone of whatever one is playing very well. It can be used for ambient swells or delay work, or to round out a driven sound. The amount of reverb is modifiable, and the pedal could not be easier to use. I recommend this pedal very much for the price for those looking for a professional sound.

hasan_ishak

417

over 6 years ago

I'm tottaly sure that this is what Im lookin for

I always Loved to use reverb effect on my guitar but for real I dont like many buttons on any pedal. While I was playing Psychedelic songs I loved to use Hall of Fame but nowadays I'm really searchin' for a simple and great way for a Reverb sound like Holy Grail Classic

Roles:

Singer Guitarist Composer

Genres:

Rock Folk, World, & Country Blues

xaqary

5455

over 9 years ago

5 stars for all it's done, but move on if you can.

This was always present for so many years even though FAR better reverb pedals have come along I can't rate lower because it served me so well for so many years. It does just what it says on the tin. There are far better reverb pedals available now (hell, in my collection-see Strymon BigSky! ) but this one will always hold a special place in my heart. Can't bring myself to sell them...

tinusbolus

224

about 9 years ago

Nice, warm sounds.

Great reverb. There are better reverbpedals, but the warm sound is really great for a pedal in this pricerange. I like The sounds very much. Only con is that the pedal with the knob over 3 o' clock quite useless sounds.....

kaden_summers

426

over 8 years ago

Very nice pedal

I like this reverb a lot, and it replaced a $45 tri-reverb pedal I used to have, so by comparison, I thought that this thing was the best I'd ever heard.